js: Split gi imports to be on new lines to prepare for ES modules

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2794>

js/ui/status/darkMode.js

@@ -1,5 +1,7 @@
 /* exported Indicator */
-const {Gio, GObject} = imports.gi;
+const Gio = imports.gi.Gio;
+const GObject = imports.gi.GObject;
+
 
 const Main = imports.ui.main;
 const {QuickToggle, SystemIndicator} = imports.ui.quickSettings;